All Outputs (108)

Investigation of the Effect of Substrate Orientation on the Structural, Electrical and Optical Properties of n-type GaAs1-xBix Layers Grown by Molecular Beam Epitaxy (2021)
Journal Article
Alhassan, S., de Souza, D., Alhassni, A., Almunyif, A., Alotaibi, S., Almalki, A., …Henini, M. (2021). Investigation of the Effect of Substrate Orientation on the Structural, Electrical and Optical Properties of n-type GaAs1-xBix Layers Grown by Molecular Beam Epitaxy. Journal of Alloys and Compounds, 885, Article 161019. https://doi.org/10.1016/j.jallcom.2021.161019

Current-Voltage (I-V), Capacitance-Voltage (C-V), Deep Level Transient Spectroscopy (DLTS), Laplace DLTS, Photoluminescence (PL) and Micro-Raman techniques have been employed to investigate the effect of the orientation of the substrates on the struc... Read More about Investigation of the Effect of Substrate Orientation on the Structural, Electrical and Optical Properties of n-type GaAs1-xBix Layers Grown by Molecular Beam Epitaxy.

Structural And Optical Properties Of n-Type and p-Type GaAs(1−x)Bix Thin Films Grown By Molecular Beam Epitaxy On (311)B GaAs Substrates (2021)
Journal Article
de Souza, D., Alhassan, S., Alotaibi, S., Alhassni, A., Almunyif, A., Kazakov, I. P., …Henini, M. (2021). Structural And Optical Properties Of n-Type and p-Type GaAs(1−x)Bix Thin Films Grown By Molecular Beam Epitaxy On (311)B GaAs Substrates. Semiconductor Science and Technology, 36(7), Article 075018. https://doi.org/10.1088/1361-6641/abf3d1

In this paper, we report on the structural and optical properties of n-type Si-doped and p-type Be-doped GaAs(1−x)Bix thin films grown by molecular beam epitaxy on (311)B GaAs substrates with nominal Bi content x=5.4%. Similar samples without Bi were... Read More about Structural And Optical Properties Of n-Type and p-Type GaAs(1−x)Bix Thin Films Grown By Molecular Beam Epitaxy On (311)B GaAs Substrates.

Investigation of the effects of thermal annealing on the structural, morphological and optical properties of nanostructured Mn doped ZnO thin films (2021)
Journal Article
Lekoui, F., Amrani, R., Filali, W., Garoudja, E., Sebih, L., Bakouk, I. E., …Henini, M. (2021). Investigation of the effects of thermal annealing on the structural, morphological and optical properties of nanostructured Mn doped ZnO thin films. Optical Materials, 118, Article 111236. https://doi.org/10.1016/j.optmat.2021.111236

The control of the optical properties of ZnO nanostructured thin films by using different dopant elements paves the way for the development of potential materials for photonic and optoelectronic applications. In this work manganese (Mn) doped ZnO thi... Read More about Investigation of the effects of thermal annealing on the structural, morphological and optical properties of nanostructured Mn doped ZnO thin films.

The Role of Defects on the Performance of Quantum Dot Intermediate Band Solar Cells (2021)
Journal Article
Collazos, L. J., Al Huwayz, M. M., Jakomin, R., Micha, D. N., Pinto, L. D., Kawabata, R. M. S., …Souza, P. L. (2021). The Role of Defects on the Performance of Quantum Dot Intermediate Band Solar Cells. IEEE Journal of Photovoltaics, 11(4), 1022-1031. https://doi.org/10.1109/jphotov.2021.3070433

Electrically active defects present in three InAs/GaAs quantum dots (QDs) intermediate band solar cells grown by metalorganic vapor phase epitaxy have been investigated. The devices’ structures are almost identical, differing only in the growth tempe... Read More about The Role of Defects on the Performance of Quantum Dot Intermediate Band Solar Cells.

The Role of Defects on the Performance of Quantum Dot Intermediate Band Solar Cells (2021)
Journal Article
Collazos, L. J., Al Huwayz, M. M., Jakomin, R., Micha, D. N., Dornelas Pinto, L., Kawabata, R. M., …Souza, P. L. (2021). The Role of Defects on the Performance of Quantum Dot Intermediate Band Solar Cells. IEEE Journal of Photovoltaics, 11(4), 1022-1031. https://doi.org/10.1109/JPHOTOV.2021.3070433

Electrically active defects present in three InAs/GaAs quantum dots (QDs) intermediate band solar cells grown by metalorganic vapor phase epitaxy have been investigated. The devices' structures are almost identical, differing only in the growth tempe... Read More about The Role of Defects on the Performance of Quantum Dot Intermediate Band Solar Cells.

Artificial bee colony algorithm: a novel strategy for optical constants and thin film thickness extraction using only optical transmittance spectra for photovoltaic applications (2021)
Journal Article
Garoudja, E., Amrani, R., Filali, W., Lekoui, F., Oussalah, S., Cuminal, Y., …Henini, M. (2021). Artificial bee colony algorithm: a novel strategy for optical constants and thin film thickness extraction using only optical transmittance spectra for photovoltaic applications. Optik, 241, Article 167030. https://doi.org/10.1016/j.ijleo.2021.167030

An effective approach to determine thin film thickness (d) and optical constants (n, k, ?) from transmittance spectrum with interference fringes is proposed. The developed strategy is based on applying the artificial bee colony (ABC) algorithm and... Read More about Artificial bee colony algorithm: a novel strategy for optical constants and thin film thickness extraction using only optical transmittance spectra for photovoltaic applications.

Mg:TiO2 alloy thin films based MOS capacitors grown on GaAs substrates (2021)
Journal Article
Dalal, A., Murli Manohar Dhar Dwivedi, S., Ghosh, C., Lahiri, R., Henini, M., & Mondal, A. (2021). Mg:TiO2 alloy thin films based MOS capacitors grown on GaAs substrates. Journal of Alloys and Compounds, 868, Article 159178. https://doi.org/10.1016/j.jallcom.2021.159178

Electron beam evaporation technique is employed to synthesise TiO2, Mg0.1Ti0.9O2 and Mg0.2Ti0.8O2 thin films (TFs) grown on (100) n-type GaAs substrates. Field emission gun-scanning electron microscope (FEG-SEM) results show that the TFs have a thick... Read More about Mg:TiO2 alloy thin films based MOS capacitors grown on GaAs substrates.

Luminescent MoS2 Quantum Dots with Tunable Operating Potential for Energy-Enhanced Aqueous Supercapacitors (2021)
Journal Article
Jeeva Panchu, S., Raju, K., Swart, H. C., Chokkalingam, B., Maaza, M., Henini, M., & Moodley, M. K. (2021). Luminescent MoS2 Quantum Dots with Tunable Operating Potential for Energy-Enhanced Aqueous Supercapacitors. ACS Omega, 6, 4542-4550. https://doi.org/10.1021/acsomega.0c02576

Wide band gap luminescent MoS2 quantum dots (QDs) and MoS2 nanocrystals (NCs) have been synthesized by using laser-assisted chemical vapour deposition and used as an electrode material in supercapacitors. Size-dependent properties of the MoS2 QDs and... Read More about Luminescent MoS2 Quantum Dots with Tunable Operating Potential for Energy-Enhanced Aqueous Supercapacitors.

From Cow Manure to Bioactive Carbon Dots: A Light-up Probe for Bioimaging Investigations, Glucose Detection and Potential Immunotherapy Agent for Melanoma Skin Cancer (2021)
Journal Article
Hillesheim Horst, F., Vitoria da Silva Rodrigues, C., Pimenta Rocha Carvalho, P. H., Monteiro Leite, A., Bentes Azevedo, R., Neto, B. A., …Rodrigues, M. O. (2021). From Cow Manure to Bioactive Carbon Dots: A Light-up Probe for Bioimaging Investigations, Glucose Detection and Potential Immunotherapy Agent for Melanoma Skin Cancer. RSC Advances, 2021(11), 6346-6352. https://doi.org/10.1039/D0RA10859F

Bioactive carbon dots (C-dots) with ca. 4 nm were successfully produced with singular photophysical properties, low-toxicity and interesting immunological response. The optical properties of the C-dots were investigated and the “light-up” behaviour e... Read More about From Cow Manure to Bioactive Carbon Dots: A Light-up Probe for Bioimaging Investigations, Glucose Detection and Potential Immunotherapy Agent for Melanoma Skin Cancer.

Enhanced anticorrosion properties of nitrogen ions modified polyvinyl alcohol/Mg-Ag ions co-incorporated calcium phosphate coatings (2020)
Journal Article
Thanigai Arul, K., Manikandan, E., Ramana Ramya, J., Indirae, K., Kamachi Mudali, U., Henini, M., …Narayana Kalkura, S. (2021). Enhanced anticorrosion properties of nitrogen ions modified polyvinyl alcohol/Mg-Ag ions co-incorporated calcium phosphate coatings. Materials Chemistry and Physics, 261, Article 124182. https://doi.org/10.1016/j.matchemphys.2020.124182

Nitrogen ions (70 keV) were implanted on composite coatings containing polymer/Mg (magnesium)–Ag (silver) ions co-incorporated hydroxyapatite which is developed by microwave irradiation. Average crystallite size of modified coatings is reduced to 80%... Read More about Enhanced anticorrosion properties of nitrogen ions modified polyvinyl alcohol/Mg-Ag ions co-incorporated calcium phosphate coatings.

Laser fabrication of Cu nanoparticles based nanofluid with enhanced thermal conductivity: Experimental and molecular dynamics studies (2020)
Journal Article
Khamliche, T., Khamlich, S., Moodley, M., Mothudi, B., Henini, M., & Maaza, M. (2021). Laser fabrication of Cu nanoparticles based nanofluid with enhanced thermal conductivity: Experimental and molecular dynamics studies. Journal of Molecular Liquids, 323, Article 114975. https://doi.org/10.1016/j.molliq.2020.114975

Nanofluids are engineered colloidal suspensions of solid nanoparticles in aqueous and non-aqueous base fluids with enhanced thermo-physical characteristics compared to conventional heat transfer fluids (HTFs). In this study, we report on the fabricat... Read More about Laser fabrication of Cu nanoparticles based nanofluid with enhanced thermal conductivity: Experimental and molecular dynamics studies.

The effect of strain and spatial Bi distribution on the band alignment of GaAsBi single quantum well structure (2020)
Journal Article
Gunes, M., Donmez, O., Gumus, C., Erol, A., Alghamdi, H., Alhassan, S., …Henini, M. (2021). The effect of strain and spatial Bi distribution on the band alignment of GaAsBi single quantum well structure. Physica B: Condensed Matter, 602, Article 412487. https://doi.org/10.1016/j.physb.2020.412487

The band line-up and band offset calculations of GaAs0.978Bi0.022/GaAs single quantum well with spatial changes of Bi composition were reported. The spatial Bi profile and a certain amount of the Bi composition in the barrier layer were determined by... Read More about The effect of strain and spatial Bi distribution on the band alignment of GaAsBi single quantum well structure.

p-Type Transparent Cu2S Thin Film Grown By Thermionic Vacuum Arc for Optoelectronic Applications (2020)
Journal Article
Kaan Kaplan, H., Kemal Akay, S., & Henini, M. (2021). p-Type Transparent Cu2S Thin Film Grown By Thermionic Vacuum Arc for Optoelectronic Applications. Materials Science and Engineering: B, 263, Article 114872. https://doi.org/10.1016/j.mseb.2020.114872

In this study, we have used a new single-step method for producing Cu2S thin films, which have good transparency in the visible range and high hole conductivity properties suitable for a wide range of optoelectronic device applications. Cu2S thin fil... Read More about p-Type Transparent Cu2S Thin Film Grown By Thermionic Vacuum Arc for Optoelectronic Applications.

Comparative study of various methods for extraction of multi- quantum wells Schottky diode parameters (2020)
Journal Article
Garoudja, E., Filali, W., Oussalah, S., Sengouga, N., & Henini, M. (2020). Comparative study of various methods for extraction of multi- quantum wells Schottky diode parameters. Journal of Semiconductors, 41(10), Article 102401. https://doi.org/10.1088/1674-4926/41/10/102401

In this work, forward current voltage characteristics for multi-quantum wells Al0.33Ga0.67As Schottky diode were measured at temperature ranges from 100 to 300 K. The main parameters of this Schottky diode, such as the ideality factor, barrier height... Read More about Comparative study of various methods for extraction of multi- quantum wells Schottky diode parameters.

Optical properties of biosynthesized nanoscaled Eu2O3 for red luminescence applications (2020)
Journal Article
Mohamed, H. E. A., Hkiri, K., Khenfouch, M., Dhlamini, S., Henini, M., & Maaza, M. (2020). Optical properties of biosynthesized nanoscaled Eu2O3 for red luminescence applications. Journal of the Optical Society of America A, 37(11), C73-C79. https://doi.org/10.1364/JOSAA.396244

This contribution reports on the optical properties of biosynthesised Eu2O3 nanoparticles bioengineered for the first time by a green and cost effective method using aqueous fruit extracts of Hyphaene thebaica as an effective chelating and capping ag... Read More about Optical properties of biosynthesized nanoscaled Eu2O3 for red luminescence applications.

Remarkable thermal conductivity enhancement in Ag—decorated graphene nanocomposites based nanofluid by laser liquid solid interaction in ethylene glycol (2020)
Journal Article
Mbambo, M. C., Khamlich, S., Khamliche, T., Moodley, M. K., Kaviyarasu, K., Madiba, I. G., …Maaza, M. (2020). Remarkable thermal conductivity enhancement in Ag—decorated graphene nanocomposites based nanofluid by laser liquid solid interaction in ethylene glycol. Scientific Reports, 10, Article 10982. https://doi.org/10.1038/s41598-020-67418-3

We report on the synthesis and enhanced thermal conductivity of stable Ag-decorated 2-D graphene nanocomposite in ethylene glycol based nanofluid by laser liquid solid interaction. A surfactant free nanofluid of Ag nanoparticles anchored onto the 2-D... Read More about Remarkable thermal conductivity enhancement in Ag—decorated graphene nanocomposites based nanofluid by laser liquid solid interaction in ethylene glycol.

The Influence Of Point Defects And Dislocation On AlGaN-Based Deep Ultraviolet LEDs (2020)
Journal Article
Ma, Z., Almalki, A., Yang, X., Wu, X., Xi, X., Li, J., …Zhao, L. (2020). The Influence Of Point Defects And Dislocation On AlGaN-Based Deep Ultraviolet LEDs. Journal of Alloys and Compounds, 845, Article 156177. https://doi.org/10.1016/j.jallcom.2020.156177

AlGaN-based deep ultraviolet LEDs with high Al composition are promising for many applications, including air- or water-purification, fluorescence sensing, etc. However, to realize their full potential, it is important to understand the impact of the... Read More about The Influence Of Point Defects And Dislocation On AlGaN-Based Deep Ultraviolet LEDs.

Investigation of the structural, optical and electrical properties of indium-doped TiO2 thin films grown by Pulsed Laser Deposition technique on low and high index GaAs planes (2020)
Journal Article
Al mashary, F. S., Felix, J. F., Ferreira, S. O., de Souza, D., Gobato, Y. G., Chauhan, J., …Alyamani, A. Y. (2020). Investigation of the structural, optical and electrical properties of indium-doped TiO2 thin films grown by Pulsed Laser Deposition technique on low and high index GaAs planes. Materials Science and Engineering: B, 259, Article 114578. https://doi.org/10.1016/j.mseb.2020.114578

© 2020 Elsevier B.V. The properties of In-doped TiO2 grown by Pulsed Laser Deposition on (1 0 0) and (3 1 1)B GaAs substrates have been investigated. X-ray diffraction and photoluminescence results have shown that samples grown on (3 1 1)B GaAs plane... Read More about Investigation of the structural, optical and electrical properties of indium-doped TiO2 thin films grown by Pulsed Laser Deposition technique on low and high index GaAs planes.

Investigation of the effect of different thicknesses and thermal annealing on the optical properties of GaAs0.1P0.89N0.01 alloys grown on GaP substrates (2020)
Journal Article
Alburaiha, H., Albalawi, H., & Henini, M. (2020). Investigation of the effect of different thicknesses and thermal annealing on the optical properties of GaAs0.1P0.89N0.01 alloys grown on GaP substrates. Materials Science in Semiconductor Processing, 117, https://doi.org/10.1016/j.mssp.2020.105143

This work investigates the effect of the thickness of the epitaxial layer (100 nm and 1 ?m) on the optical properties of quaternary GaAs0.1P0.89N0.01 alloys. Furthermore, the effect of rapid thermal annealing (RTA) on their properties has been studie... Read More about Investigation of the effect of different thicknesses and thermal annealing on the optical properties of GaAs0.1P0.89N0.01 alloys grown on GaP substrates.

Effect of thermal annealing on the opticaland structural properties of (311)B and(001) GaAsBi/GaAs single quantum wellsgrown by MBE (2020)
Journal Article
Alghamdi, H., Gordo, V. O., Schmidbauer, M., Felix, J. F., Alhassan, S., Alhassni, A., …Henini, M. (2020). Effect of thermal annealing on the opticaland structural properties of (311)B and(001) GaAsBi/GaAs single quantum wellsgrown by MBE. Journal of Applied Physics, 127(12), Article 125704. https://doi.org/10.1063/1.5140447

The effect of Furnace Annealing (FA) and Rapid Thermal annealing (RTA) on the structural and optical properties of GaAs1 − xBix/GaAs single quantum wells grown on (001) and (311)B substrates by molecular beam epitaxy was investigated. The structural... Read More about Effect of thermal annealing on the opticaland structural properties of (311)B and(001) GaAsBi/GaAs single quantum wellsgrown by MBE.